1. IEEE802.11b thiab IEEE802.11g ob leeg siv nyob rau hauv 2.4GHz zaus band. Cia peb piav ob txoj cai no ua ntu zus kom peb nkag siab txog cov qauv ntawm cov txheej txheem sib txawv.
IEEE 802.11b yog tus qauv rau kev sib txuas hauv cheeb tsam wireless. Nws cov cab kuj zaus yog 2.4GHz, thiab nws tuaj yeem muab ntau qhov kev sib kis ceev ntawm 1, 2, 5.5, thiab 11 mbit / s, mus txog 11 mbit / s. Nws lub sijhawm tso tawm yog 5 npaug sai dua li IEEE 802.11 tus qauv nyuam qhuav pom zoo ob xyoos dhau los, uas tau nthuav dav daim ntawv thov ntawm wireless hauv cheeb tsam network thiab muab kev txhawb nqa yooj yim rau kev sib kis ntau dua. Hauv kev siv, sib txawv bandwidths ntawm 5.5 Mbps, 2 Mbps, thiab 1 Mbps tuaj yeem siv raws li qhov xwm txheej tiag tiag. Tom qab kev sim tiag tiag, qhov ua haujlwm ceev yog li 5 MB / s, uas yuav luag nyob rau tib theem li 10Base-T cable LAN. Nyob rau hauv ISM band ntawm 2.4GHz, muaj 11 raws nrog ib tug bandwidth ntawm 22mhz muaj, uas yog 11 overlapping bands. Tus qauv ua tiav rau IEEE 802.11b yog IEEE 802.11g.
2. IEEE 802.11g tau txais yuav thaum Lub Xya Hli 2003. Cov neeg nqa khoom zaus yog 2.4GHz (tib yam li 802.11b), thiab muaj 14 zaus bands. Tus thawj kis tau tus mob ceev yog 54 Mbit / s, thiab net kis ceev yog hais txog 24.7 Mbit / s (tib yam li 802.11a). Lub 802.11g ntaus ntawv yog downward tshaj 802.11b.
Txij thaum ntawd los, qee qhov wirelessroutercov tuam txhab tau tsim cov qauv tshiab raws li IEEE 802.11g tus qauv kom ua tau raws li kev lag luam xav tau thiab tau nce qhov kev sib kis ceev mus rau 108 mbit / s lossis 125 mbit / s. Tam sim no, muaj cov txheej txheem taug qab xws li IEEE 802.ax uas koom nrog WiFi 6 lossis siab dua, uas yog txhua qhov ua tau zoo hauv PHY txheej txhawm rau txhawm rau txhawm rau nrawm dua li Gigabit, yog li peb yuav tsis tham txog lawv ntawm no.
Cov duab hauv qab no yog cov ntsiab lus ntawm IEEE802.11a IEEE802.11b IEEE802.11g:
Cov lus saum toj no yog qhov kev paub piav qhia ntawm IEEE 802.11b / IEEE 802.11g coj los ntawmShenzhen HDV Phoelectron Technology Co., Ltd. vam tias tsab xov xwm no tuaj yeem pab koj nce koj txoj kev paub. Dhau li ntawm tsab xov xwm no yog tias koj tab tom nrhiav rau lub tuam txhab kev sib txuas lus zoo fiber ntau cov khoom lag luam koj tuaj yeem xav txogtxog peb.
Cov khoom sib txuas lus tsim los ntawm lub tuam txhab npog:
Module:optical fiber modules, Ethernet modules, optical fiber ntau transceiver modules, optical fiber nkag modules, SSFP optical modules, thiabSFP optical fibers, lwm.
ONUqeb:EPON UA, AC ONU, Optical fiber ntau ONU, CATV UA, GPON UA, XOV TOOJ, lwm.
OLTchav kawm:OLT hloov, GPON OLT, PEB OLT, kev sib txuas lusOLT, lwm.
Cov khoom saum toj no tuaj yeem txhawb nqa cov xwm txheej sib txawv. Rau cov khoom lag luam saum toj no, ib pab neeg ua haujlwm R & D muaj zog tau ua ke los muab kev txhawb nqa rau cov neeg siv khoom, thiab pab pawg ua lag luam xav tau zoo tuaj yeem muab cov kev pabcuam zoo rau cov neeg siv khoom thaum ntxov.kev sab lajthiab tom qab ntawd ua haujlwm.
